Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 145
Continue Clause, Logging of ACL Processes
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redistribute ospf 34 metric 1 route-map torip ! route-map torip permit 10 match route-type internal set tag 34 ! Continue Clause Normally, when a match is found, set clauses are executed, and the packet is then forwarded; no more route-map modules are processed. If you configure the continue command at the end of a module, the next module (or a specified module) is processed even after a match is found. The following example shows a continue clause at the end of a route-map module. In this example, if a match is found in the route-map "test" module 10, module 30 is processed. NOTE: If you configure the continue clause without specifying a module, the next sequential module is processed. Example of Using the continue Clause in a Route Map ! route-map test permit 10 match commu comm-list1 set community 1:1 1:2 1:3 set as-path prepend 1 2 3 4 5 continue 30! Logging of ACL Processes This functionality is supported on the S4820T platform. To assist in the administration and management of traffic that traverses the device after being validated by the configured ACLs, you can enable the generation of logs for access control list (ACL) processes. Although you can configure ACLs with the required permit or deny filters to provide access to the incoming packet or disallow access to a particular user, it is also necessary to monitor and examine the traffic that passes through the device. To evaluate network traffic that is subjected to ACLs, configure the logs to be triggered for ACL operations. This functionality is primarily needed for network supervision and maintenance activities of the handled subscriber traffic. When ACL logging is configured, and a frame reaches an ACL-enabled interface and matches the ACL, a log is generated to indicate that the ACL entry matched the packet. When you enable ACL log messages, at times, depending on the volume of traffic, it is possible that a large number of logs might be generated that can impact the system performance and efficiency. To avoid an overload of ACL logs from being recorded, you can configure the rate-limiting functionality. Specify the interval or frequency at which ACL logs must be triggered and also the threshold or limit for the maximum number of logs to be generated. If you do not specify the frequency at which ACL logs must be generated, a default interval of 5 minutes is used. Similarly, if you do not specify the threshold for ACL logs, a default threshold of 10 is used, where this value refers to the number of packets that are matched against an ACL . A Layer 2 or Layer 3 ACL contains a set of defined rules that are saved as flow processor (FP) entries. When you enable ACL logging for a particular ACL rule, a set of specific ACL rules translate to a set of FP Access Control Lists (ACLs) 145
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